Explores the reasons why data logging is still not an integral part of the science curriculum in the majority of British schools. Suggests some strategies to assist science teachers in taking the initial steps towards utilizing this technology. (DDR)

Described is a demonstration science laboratory at the University of Florida. Discussed is laboratory design, including instructional space, lab stations, sink areas, safety areas, and a storage and distribution area. The impact of this type of design is cited. Diagrams and photographs are included. (CW)

Described are the apparatus and procedures needed for a demonstration of variables which affect centripetal force. Discussed are materials, apparatus construction, calibration, and experimental results. (CW)

Described is a lesson in which students are taught how to use a compass and determine where they are heading. Provided are detailed instructions, illustrations, reproducible task cards, additional activities, and an answer key. (RT)

Chromium(VI) compounds are classified as oxidizers and must be specially packaged and transported for disposal while Cr(III) compounds are considered nonoxidizers. A process which reduces Cr(VI) to Cr(III) by adding sodium metabisulfite followed by neutralization with magnesium hydroxide is explored. (MVL)

Presents the construction aspects of a simple but reliable colorimeter made from locally available components. Notes the absorption range to be 400-750-nm. Lists seven experiments done on the instrument. (MVL)

Provides information on the parts, materials, prices, dimensions, and tools needed for the construction of a telescope that can be used in high school science laboratories. Includes step-by-step directions and a diagram for assembly. (RT)

Examines the influence of the use of hands-on materials in elementary school science instruction from a survey of 301 school principals. The rationale for the survey, questions used, and responses are provided. Lists 12 references. (YP)

Reports that although excitation at 337nm is less than optimal, detection limits in the range 1-100pg/ml were found. Provides a calibration curve and results for seven organic compounds. (MVL)

Describes a science presentation which promotes various ways to improve laboratory safety. Recommendations for storing chemicals include: minimize the type and amount of stocked materials, purchase certain chemicals in small quantities, and use plastic embedments. Cites several books for reference. (RT)

Describes a successful effort by an elementary school and community to convert a classroom into a school science laboratory and stock the laboratory with science materials and apparatus. (PR)

Describes the rebuilding of a Project Physics fan cart on a PASCO dynamics cart chassis for achieving greatly reduced frictional forces. Suggests four experiments for the rebuilt cart: (1) acceleration on a level track, (2) initial negative velocity, (3) different masses and different forces, and (4) inclines. (MVL)

Describes an apparatus that displays longitudinal and transverse waves in a spring to large classes with the help of an overhead projector. (MVL)

Describes a set of displays on the theme of coupled mechanical oscillators. Displays encompass three common demonstrations: (1) a coupled pair of identical pendulums; (2) a multiple-pendulum resonance demonstration; and (3) a Wilberforce coupled oscillator. (MDH)